Will depend on what the situation is when they get there in c.3 hours. Disruption could mean stock out of place / delays rather than line totally closed.
It's a big fire though so may not be sorted by 6am, in which case 1M11/1M16 would logically have to terminate short somewhere and onward travel arranged.
There's also the issue that at least one set of stock and staff is in the wrong place for Fri night's service. Currently 3 will be south and only one north.
I would presume that passengers on 1M16 were either provided with road transport for the rest of the journey, or told to continue their journey via alternative routes (e.g. Manchester, Sheffield then EMT, or Birmingham then Chiltern).
In the past, when the Caledonian Sleepers have been unable to run because of unforeseen circumstances such as this, they have usually provided replacement road coaches for seated passengers, with berth passengers being offered a choice of road transport or staying in a hotel and then travelling on daytime trains (or maybe flying if they had an urgent business appointment).
